diff options
| author | Demi Obenour <demiobenour@gmail.com> | 2016-09-23 11:28:56 -0400 |
|---|---|---|
| committer | Will Estes <westes575@gmail.com> | 2016-09-25 16:12:14 -0400 |
| commit | e50d903620be9b81e8dd89d1ed1063c13836ff26 (patch) | |
| tree | 2af5809689166b1e2a809208193c7e9d2301aaa8 /doc | |
| parent | 7528bc0aee69c32fad8ffd8c84a4008627b7e445 (diff) | |
no longer generate K&R C scanners
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/flex.texi | 23 |
1 files changed, 8 insertions, 15 deletions
diff --git a/doc/flex.texi b/doc/flex.texi index 6af69df..c71dc59 100644 --- a/doc/flex.texi +++ b/doc/flex.texi @@ -1491,15 +1491,14 @@ the scanning routine using a K&R-style/non-prototyped function declaration, you must terminate the definition with a semi-colon (;). @code{flex} generates @samp{C99} function definitions by -default. However flex does have the ability to generate obsolete, er, -@samp{traditional}, function definitions. This is to support +default. Flex used toFlex used to have the ability to generate obsolete, er, +@samp{traditional}, function definitions. This was to support bootstrapping gcc on old systems. Unfortunately, traditional definitions prevent us from using any standard data types smaller than -int (such as short, char, or bool) as function arguments. For this -reason, future versions of @code{flex} may generate standard C99 code -only, leaving K&R-style functions to the historians. Currently, if you -do @strong{not} want @samp{C99} definitions, then you must use -@code{%option noansi-definitions}. +int (such as short, char, or bool) as function arguments. Furthermore, +traditional definitions support added extra complexity in the skeleton file. +For this reason, current versions of @code{flex} generate standard C99 code +only, leaving K&R-style functions to the historians. @cindex stdin, default for yyin @cindex yyin @@ -2860,19 +2859,13 @@ calls @code{yylex()} again). @opindex ---option-ansi-definitions @opindex ansi-definitions @item --ansi-definitions, @code{%option ansi-definitions} -instruct flex to generate ANSI C99 definitions for functions. -This option is enabled by default. -If @code{%option noansi-definitions} is specified, then the obsolete style -is generated. +Deprecated, ignored @anchor{option-ansi-prototypes} @opindex ---option-ansi-prototypes @opindex ansi-prototypes @item --ansi-prototypes, @code{%option ansi-prototypes} -instructs flex to generate ANSI C99 prototypes for functions. -This option is enabled by default. -If @code{noansi-prototypes} is specified, then -prototypes will have empty parameter lists. +Deprecated, ignored @anchor{option-bison-bridge} @opindex ---bison-bridge |